函数逻辑报告 |
Source Code:mm\page_isolation.c |
Create Date:2022-07-27 17:59:50 |
Last Modify:2020-03-12 14:18:49 | Copyright©Brick |
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函数名称:Test all pages in the range is free(means isolated) or not.* all pages in [start_pfn...end_pfn) must be in the same zone.* zone->lock must be held before call this.* Returns the last tested pfn.
函数原型:static unsigned long __test_page_isolated_in_pageblock(unsigned long pfn, unsigned long end_pfn, int flags)
返回类型:unsigned long
参数:
类型 | 参数 | 名称 |
---|---|---|
unsigned long | pfn | |
unsigned long | end_pfn | |
int | flags |
266 | 如果非pfn_valid_within(pfn)则 |
267 | pfn自加 |
268 | 继续下一循环 |
270 | page等于pfn_to_page(pfn) |
271 | 如果PageBuddy() indicates that the page is free and in the buddy system* (see mm/page_alloc.c).则pfn加等于1左移page_order(page)位 |
278 | 否则如果flags按位与MEMORY_OFFLINE且PageHWPoison(page)则pfn自加 |
281 | 否则退出 |
285 | 返回:pfn |
名称 | 描述 |
---|---|
test_pages_isolated | Caller should ensure that requested range is in a single zone |
源代码转换工具 开放的插件接口 | X |
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支持:c/c++/esqlc/java Oracle/Informix/Mysql 插件可实现:逻辑报告 代码生成和批量转换代码 |